• DocumentCode
    1447145
  • Title

    Asymmetric coupled line directional coupler loaded with shunt inductors for directivity enhancement

  • Author

    Park, Je-Ho ; Lee, Youngjoo

  • Author_Institution
    Dept. of Electr. & Electron. Eng., Yonsei Univ., Seoul, South Korea
  • Volume
    46
  • Issue
    6
  • fYear
    2010
  • Firstpage
    425
  • Lastpage
    426
  • Abstract
    A directivity enhancement technique of shunt-inductive loading is demonstrated for asymmetric coupled line backward-wave directional couplers. Through rigorous normal-mode analysis, the exact condition for isolation zero is derived. Experimental results for a 5 dB coupler at 0.9 GHz show as much as 33 dB improvements in the directivity over its conventional counterpart.
  • Keywords
    coupled transmission lines; directional couplers; inductors; asymmetric coupled line backward-wave directional coupler; directivity enhancement; frequency 0.9 GHz; isolation zero; normal-mode analysis; shunt inductor; shunt-inductive loading;
  • fLanguage
    English
  • Journal_Title
    Electronics Letters
  • Publisher
    iet
  • ISSN
    0013-5194
  • Type

    jour

  • DOI
    10.1049/el.2010.0214
  • Filename
    5434625
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1447145